The CMCP610 Eddy Probe Calibrator provides a convenient and precise method of verifying the voltage output vs. physical gap of an Eddy Probe and Driver system. Designed for use in the field or the shop, the CMCP-610 will work with any manufacturer's 5mm or 8mm probe systems. It will accommodate both 1/4"-28 and 3/8"-24 UNF eddy probes and accept any probe length.